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TPS51200: TPS51200 VTT Margining

Part Number: TPS51200

Hi,

Designing a DDR4 memory interface using TPS51200 for VTT power and reference.

A colleague suggested we might want to margin the VTT so we set optimum voltage.

Anybody comment if this is a good idea and if yes please provide a circuit to do this - ideally something software could set "on-the-fly" during testing.

Thanks